Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e0b0ee3e5a58d3a…

MALICIOUS

PDF

171.4 KB Created: 2021-08-10 14:43:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 5a11839e9a421e8db10f9a8ca5eb871e SHA-1: a77764f25042324e94c0b99104f961d37f84fbc7 SHA-256: 2e0b0ee3e5a58d3ab179ad86c73b97877aa887df86dbc46b090bb71b3b889a8b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains a link farm pointing to various domains, many of which are hosted on compromised CMS platforms or appear to be disposable, suggesting a phishing or malware distribution scheme. The presence of embedded URLs and the overall structure point towards an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://tortugafilms.ca/adminfiles/file/lesamajekoto.pdf In PDF document text
    • https://senhewood.com/d/files/1410599888.pdfIn PDF document text
    • https://otelnamore.com/wp-content/plugins/super-forms/uploads/php/files/2d5f8839538ffd2bf31a39c0975f9f53/33503052511.pdfIn PDF document text
    • http://applecentervn.com/uploads/image/files/22359206234.pdfIn PDF document text
    • http://champagne-marc-chauvet.com/images/files/lufagitajewazekuvimuw.pdfIn PDF document text
    • https://www.glasswindowequipment.com/wp-content/plugins/super-forms/uploads/php/files/43daecafb3bcf3d0f13350e1618ebf8a/gejufunosizuz.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610899dc91a82.pdfIn PDF document text
    • http://darstin.com/userfiles/files/1293755195.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/ruvezobodekedanu.pdfIn PDF document text
    • http://cuacuonnhanh.vn/Images_upload/files/42503192155.pdfIn PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608af785e56eb---fotuviresakokera.pdfIn PDF document text
    • http://resortcrimea.com/ckfinder/userfiles/files/62045711947.pdfIn PDF document text
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/16107903685646---zadizuj.pdfIn PDF document text
    • http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/1608f72900ff95---tibaxeda.pdfIn PDF document text
    • http://royalwedding.jp/images/blog//file/repabigadot.pdfIn PDF document text
    • http://shinex-auto.com/userfiles/file/rosewetuzizalopazobowike.pdfIn PDF document text
    • http://clearspace-design.com/CKEdit/upload/files/vijabuzozebi.pdfIn PDF document text
    • https://www.lightingsolutionsinc.net/wp-content/plugins/super-forms/uploads/php/files/a3329ed1d1b3d8a3ca1f8e56896e27cb/mekevebejejawevevib.pdfIn PDF document text
    • https://agrilaui.com/userfiles/file/tarinogina.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/43ea735d26999f8c99e16c84ade7dae7/33426193967.pdfIn PDF document text
    • http://tafgambiatours.com/userfiles/file/73756122692.pdfIn PDF document text
    • http://moyamoya.center/images/hand_uploaded/files/xolaz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=horus+heresy+book+1+betrayal+pdfPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023ced.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23CED 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00025504.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25504 10888 bytes
SHA-256: 3aba4d09bfc310dfaa72b96d79774698cda37a2e3e50236416bc1d08fb302f55
font_02_sfnt_off00026e39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26E39 18376 bytes
SHA-256: f594a893cba8e2acf09c4854b3a5acb9cbedaee6eef6c95b1687d7e0d202190d

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